JP3669812B2 - サーボアドレスマーク検出ミッシングによるサーボパターンオーバライト防止回路 - Google Patents

サーボアドレスマーク検出ミッシングによるサーボパターンオーバライト防止回路 Download PDF

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Publication number
JP3669812B2
JP3669812B2 JP11305797A JP11305797A JP3669812B2 JP 3669812 B2 JP3669812 B2 JP 3669812B2 JP 11305797 A JP11305797 A JP 11305797A JP 11305797 A JP11305797 A JP 11305797A JP 3669812 B2 JP3669812 B2 JP 3669812B2
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JP
Japan
Prior art keywords
servo
address mark
pulse
signal
servo address
Prior art date
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Expired - Fee Related
Application number
JP11305797A
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English (en)
Japanese (ja)
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JPH1050015A (ja
Inventor
鎬烈 方
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of JPH1050015A publication Critical patent/JPH1050015A/ja
Application granted granted Critical
Publication of JP3669812B2 publication Critical patent/JP3669812B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59605—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
JP11305797A 1996-04-30 1997-04-30 サーボアドレスマーク検出ミッシングによるサーボパターンオーバライト防止回路 Expired - Fee Related JP3669812B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1996P13886 1996-04-30
KR1019960013886A KR100194023B1 (ko) 1996-04-30 1996-04-30 서보 어드레스 마크 검출 미싱으로 인한 서보패턴 오버라이트 방지회로

Publications (2)

Publication Number Publication Date
JPH1050015A JPH1050015A (ja) 1998-02-20
JP3669812B2 true JP3669812B2 (ja) 2005-07-13

Family

ID=19457378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11305797A Expired - Fee Related JP3669812B2 (ja) 1996-04-30 1997-04-30 サーボアドレスマーク検出ミッシングによるサーボパターンオーバライト防止回路

Country Status (5)

Country Link
US (1) US6115199A (de)
JP (1) JP3669812B2 (de)
KR (1) KR100194023B1 (de)
DE (1) DE19718114B4 (de)
GB (1) GB2312780B (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0176651B1 (ko) * 1996-06-27 1999-04-15 김광호 서보 어드레스 마크 자동검출 및 서보타이밍 보상회로
US6195767B1 (en) * 1998-09-14 2001-02-27 Phillip M. Adams Data corruption detection apparatus and method
JP2000123491A (ja) * 1998-10-14 2000-04-28 Alps Electric Co Ltd 磁気ディスク装置
JP2000195172A (ja) * 1998-12-24 2000-07-14 Sony Corp データ記録及び／又は再生装置
JP4263340B2 (ja) * 2000-07-07 2009-05-13 ヒタチグローバルストレージテクノロジーズネザーランドビーブイ 回転記憶装置およびその制御方法
US6900955B2 (en) * 2001-05-22 2005-05-31 Seagate Technology Llc Method and apparatus providing variable spin pad lengths
JP3561246B2 (ja) * 2001-08-02 2004-09-02 株式会社東芝 ディスク記憶装置及びサーボ情報の位置ずれ補償方法
JP3556623B2 (ja) * 2001-08-02 2004-08-18 株式会社東芝 ディスク記憶装置及び同装置におけるサーボセクタパルス生成方法
US7006311B2 (en) * 2002-12-27 2006-02-28 Matsushita Electric Industrial Co., Ltd Systems for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness
US6995935B2 (en) * 2002-12-27 2006-02-07 Matsushita Electric Industrial Co., Ltd. Methods for detecting multiple occurrences of a SAM pattern to thereby improve servo-demodulation robustness
US7016133B2 (en) * 2002-12-27 2006-03-21 Matsushita Electric Industrial Co., Ltd. Systems for detecting multiple occurrences of a SAM pattern to thereby improve servo-demodulation robustness
US7006312B2 (en) * 2002-12-27 2006-02-28 Matsushita Electic Industrial Co., Ltd. Methods for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness
US7009806B2 (en) * 2003-02-19 2006-03-07 Matsushita Electric Industrial Co., Ltd. Accurate tracking of coil resistance
US7082009B2 (en) * 2003-02-19 2006-07-25 Matsushita Electric Industrial Co., Ltd. Accurate tracking of coil resistance based on current, voltage and angular velocity
US7054083B2 (en) * 2003-07-16 2006-05-30 Matsushita Electric Industrial Co., Ltd. Systems for searching for SAM patterns at multiple nominal frequencies
US7075742B2 (en) * 2003-07-16 2006-07-11 Matsushita Electric Industrial Co., Ltd. Servo demodulator systems including multiple servo demodulators
US7072128B2 (en) * 2003-07-16 2006-07-04 Matsushita Electric Industrial Co., Ltd. Methods for searching for SAM patterns at multiple nominal frequencies
US7092177B2 (en) * 2003-07-16 2006-08-15 Matsushita Electric Industrial Co., Ltd. Methods for searching for SAM patterns using multiple sets of servo demodulation detection parameters
US6917486B2 (en) * 2003-07-18 2005-07-12 Matsushita Electrical Industrial Co., Ltd. Direct detection of coil resistance
US8405924B2 (en) * 2004-04-30 2013-03-26 Agere Systems Llc Method and apparatus for improved address mark detection
JP4991469B2 (ja) * 2007-09-28 2012-08-01 株式会社東芝 サーボフレーム間隔補正装置、記憶装置、サーボフレーム間隔補正方法
US8749909B1 (en) * 2012-12-23 2014-06-10 HGST Netherlands B.V. Disk drive with servo system with timing adjustments to master timer for SAM detection errors

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0241868B1 (de) * 1986-04-16 1996-03-20 Hitachi, Ltd. Plattengerät
US4823212A (en) * 1986-11-26 1989-04-18 Hewlett-Packard Company Sampled servo code format and system for a disc drive
JPH0821213B2 (ja) * 1988-08-05 1996-03-04 富士通株式会社 セクターサーボ情報検出方法
US5210660A (en) * 1990-01-17 1993-05-11 International Business Machines Corporation Sectored servo independent of data architecture
US5420730A (en) * 1990-08-17 1995-05-30 Moon; Ronald R. Servo data recovery circuit for disk drive having digital embedded sector servo
US5255136A (en) * 1990-08-17 1993-10-19 Quantum Corporation High capacity submicro-winchester fixed disk drive
US5231545A (en) * 1991-06-04 1993-07-27 Quantum Corporation Fault tolerant rll data sector address mark decoder
US5517371A (en) * 1991-10-18 1996-05-14 Teac Corporation Track sector detection system for rotating disk data storage apparatus
US5444685A (en) * 1991-12-16 1995-08-22 Advanced Micro Devices, Inc. Sector mark pattern detection for optical data disk controller
US5384671A (en) * 1993-12-23 1995-01-24 Quantum Corporation PRML sampled data channel synchronous servo detector
KR970010638B1 (ko) * 1994-05-11 1997-06-28 삼성전자 주식회사 서보 어드레스 마크 검출 보상 회로
JPH0831102A (ja) * 1994-07-15 1996-02-02 Toshiba Corp データ記録再生装置及び同装置に適用されるサーボセクタパルス生成方法
US5544135A (en) * 1994-10-11 1996-08-06 Quantum Corporation Fault tolerant servo address mark for disk drive
US5977472A (en) * 1997-01-08 1999-11-02 Yamaha Corporation Chord detecting apparatus and method, and machine readable medium containing program therefor

Also Published As

Publication number Publication date
KR970071711A (ko) 1997-11-07
GB2312780B (en) 1998-07-15
JPH1050015A (ja) 1998-02-20
US6115199A (en) 2000-09-05
DE19718114B4 (de) 2010-02-25
DE19718114A1 (de) 1997-11-13
KR100194023B1 (ko) 1999-06-15
GB9708762D0 (en) 1997-06-25
GB2312780A (en) 1997-11-05

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